The McAlpine Boss Connector is a plastic adapter piece designed to join an 82 mm pipe entry (often wall or floor boss) to a 3 waste pipe, while blanking off the 1 (32 mm) uni opening. This allows a clean and secure transition with one inactive outlet.
Primary Connection: 82 mm inlet from woodworking bosses or slabs
Outlet Size: 3 ( 82 mm) main outflow; includes closed-off 1 port for unused connection
Material: Sturdy polypropylene or PVC body resistant to corrosion
Type: Plain socket for easy solvent-weld attachment
Integrated Adaptation: Connects different pipe sizes in one compact unit
Port Blanking: Plugged side port prevents leaks and debris ingress
Installation-Friendly: Straightforward slip-fit design minimizes joint complexity
Secure & Durable: Made for lasting performance in drainage networks
Construction or Refurbishment: Ideal for installing boss entries in screed or wall and linking to main drainage
Floor Waste Connections: Useful where a side branch is not required
DIY Plumbing: Perfect for simplifying plumbing runs with mixed-diameter pipes
The McAlpine Boss Connector for 82 mm to 3 (with blanked 1 port) provides a clean, effective means of joining boss entries to larger waste pipes while safely sealing off unused outlets. Its solid plastic build and simple fit make it a reliable choice for both installation and repair projects.
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